Hollowed text inside a solid
If you start from a logo, you first need to import it in SVG format. Keep in mind that it will be very small in the center of your scene so you may not see it at first and you'll have to scale it a lot.
If you start from your own text, you can type it in Blender: Press shiftA > Text, go in Edit mode, type your text, if necessary choose the font in the Properties panel > Data > Font, and press on the Load a new font from file button to browse into your own fonts.
Then convert it to a mesh with an altC.
Simplify it in Edit mode with X > Limited Dissolve.
Extrude it on the Z axis: E.
Create your parallelepiped, put your text on it.
Give your parallelepiped a Boolean modifier / Difference mode and choose the text as Object.
You can keep the text and make it transparent in the Properties panel > Object > Display > Maximum Draw Type > Wire and, for the render, in the Properties panel > Object > Cycle Settings settings (deactivate all the options), or you can apply the modifier.


Is it what you want?